Valve.



VALVE.

APPLICATION FILED AUG. 24, 1911.

Patented Oct. 15, 1912.

5 SHEETSSHEET l.

COLUMBIA PLANOGRAPH C0.,\VA5HINGTON. I) c.

L. SWENINGSON & W. H. WOODWARD.

VALVE.

APPLICATION FILED AUG. 24, 1911.

1,041,697, Patented Oct. 15, 1912.

5 SHEETS-SHEET 2.

COLUMBIA PLANOGRAPH c0. WASHIN'GTDN. D. c.

cam $1 L. SWENINGSON & W. H. WOODWARD.

VALVE.

APPLIOATION 111.111) AUG. 24, 1911.

1,041,697. Patented 001. 15, 1912.

5 SHEETS-SHEET 31 COLUMBIA FLANOGRAPH CD.,WASH|NOTON. nv C.

L. SWENINGSON & W. H. WOODWARD.

VALVE.

APPLICATION FILED AUG. 24, 1911.

1,041,697. Patented Oct.15, 1912.

5 SHEETS-SHEET 4.

L. SWENINGSON & W. H. WOODWARD.

' VALVE.

APPLICATION FILED AUG. 24, 1911.

Patented Oct. 15, 19-12.

5 SHEETS-SHEET 5.

IIIIIIIIIIHI cr g LOUIS SWENINGSON AND WILLIAM H. WOODWARD, OF SALEM,OHIO.

VALVE.

Specification of Letters Patent.

Patented Oct. 15,1912.

Application filed sa es: 24, 1911. Serial No. 645,759.

To all whom it may concern:

Beit known that we, LOUIS SWENINGSON and WILLIAM H. WOODWARD, citizensof the United States, residing at Salem, in the county of Columbiana andState of Ohio, have invented certain new and useful Improvements inValves; and we do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to the letters and figures ofreference marked thereon, which form a part of this specification.

Our invention relates to improvements in valves. i

It has for its object to provide a valve which may be used for water,air, steam or other fluid and for use in connection with any contrivanceor device wherein a valve of this type may be available; and which valveis simple, containing few parts, is devoid of all springs; does notrequire the aid of any mechanical starting means to assist itsoperation, nor need any attention when in action.

A further object of this invention is to provide'means for preventingshort stroking of the piston and thus obviate and overcome a veryserious difliculty which is sometimes encountered in devices of thischaracter.

It has for a further object to carry out these ends in a simple,inexpensive and effective manner.

The -invention further consists in the arrangement and construction ofthe ports which hold the valve in its proper relative position until thepiston has completed its efiective stroke.

The invention further consists in certain other'novel details ofconstruction and-in combinations of parts, all of which will be firstfully described and afterward. specifically pointed out in the appendedclaims.

In the accompanying drawings illustrating the preferred embodiment ofour inven tion wherein it will be understood that various changes andmodifications may be made, as to the details of the construction andarrangement of the parts without departing from the spirit of theinvention; Figure 1 is a broken sectional elevation of the inventionwith the various parts in initial posit-ion.

Fig. 2 is a like sectional view thereof, the

piston of the steam or pressure cylinder being at the extreme end of itsstroke and one of a plurality of piston-valves thereof being in itsfinal position. Fig. 3 is also a like sectional view thereof, thecylinder piston being still at the end of its stroke, both of thepiston-valves, however, being shown in their final positions. Fig. 4 isa broken vertical sectional view taken centrally through the valve. Fig.5 is also a broken vertical sectional view produced on the line 55 ofFig. l. Fig. 6 is an end or face view of the larger piston-valve, andFigs. 7 and 8 are plan views of the valve-casing and thepiston-cylinder, respectively.

In carrying out our invention, we suitably house the operative parts ofthe valve in a suitable casing or casting 1 and superpose or mount andsecure the same upon a cylinder or casting 2 containing a piston 3,which cylinder may be adapted to be secured in position in any suitableway upon the device in connection with which the valve may be used, saidvalve casing being cast with a central extension 4 for providing aninletport 5 and an exhaust port 6 having passages 7 and 8, respectively,communicating with the interior of the valve-casing.

\Vithin the casing 1 is arranged a hollow or tubular piston-valve 9being introduced thereinto through the open ends of the cas ing, theopenings thereof being suitably closed by screw-threaded plugs 10, andwithin said hollow piston-valve is contained a smaller pist0n-valve 11,the piston-valve 9 having open ends for the insertion of pistonvalve 11,the openings thereof being closed by suitable screw-threaded plugs 12.

The piston-valve 9 has two series of longitudinal ducts or passages 13extending from the ends thereof to and through annular partitions orrings 14 respectively, fixed to or cast with the piston-valve 9 atopposite sides of and short distances from the inlet-port and exhaustport passages 7 and 8, respectively, said series of passages being shownin dotted lines in each of Figs. 1, 2 and 3. These series of passagesopen at their inner ends into annular passages or ports 15 formedbetween the rings or partitions 14 and additional partitions 16 formedwith the same piston valve. Also additional ports or passages 17 and 18are formed or provided in the piston-valve 9 upon opposite sides of thepartitions 14 and intermediate of said partitions and the partitions 16,

while in the inner piston-valve 11 and in the piston valve 9 aresuperficial ports or recesses 19 and 20, respectively, arranged forcooperation with the ports 13, 17 and 18, as presently disclosed. In thepiston valve 11 are also two longitudinal or axial ports or passages 21and 22, one end of each opening through an opposite end of saidpiston-valve while the other ends of said passages or ports openlaterally through diametrically opposite sides of said piston-valve intoannular recesses or ports 23 arranged in and opening through saidpiston-valve, which recesses communicate with circular passages or ports24 arranged in and opening through the piston-valve 9. Also arranged inand opening through the piston-valve 9 are additional similar ports 25,these ports communicating with the interior of said pistonvalve and withthe ports 24 and 25 communicate passages or ducts 26 and 27,respectively, disclosed in Figs. 1, 2 and 3 by dotted lines, whichpassages lead to the piston-cylinder 2, said cylinder having the usualports 28 and 29 at its ends, which serve to alternately supply andexhaust according to the direction of the stroke of the piston withrespect thereto. These ports 28 and 29 communicate with pressure orsteam passages 30 and 31, respectively, intermedi ate the valve-casingand piston-cylinder, said passages having communication at their innerends with additional passages 32 and 33, respectively, in turncommunicating with the supply or inlet and exhaust-port passages 7 and8.

The piston-valve 9 has upon its exterior suitably spaced-apart rings orshoulders 34 arranged about centrally thereof to form an annular port 35to receive the steam or other pressure supply for its delivery intoeither of the passages 32 or 33 as in supplying such pressure to thepiston-cylinder, as is thought is apparent. Still further ports orpassages 36 leading or branching off from and communicating with thesupply port 35 communicate by way of the passages 17 and 18 with theports 15, and with these latter ports communicate as before stated thepassages or ports 13 ofthe piston-valve 9.

As will appear from the drawings the ports 27 at each end of thecylinder 2 are 7 larger than the ports 26. When, however,

the piston is in position shown in Fig. l and the-valves are in theposition so illustrated the piston 3 on its return stroke causes thecylinder 2 to exhaust a .portion of its contentsinto the port 27 at theextreme right end of-the cylinder 2 and also a portion-of its contentsinto port 26 which is closer to the center of the cylinder. The exhaustentering port 27 from the cylinder 2-passes up as indicated in dottedlines in Fig. land enters the main valve 9 thus acting on the contiguousend or head of the auxiliary valve 11, while the exhaust entering port26 passes up as indicated in dotted lines in Fig. 1 and enters theannular port or recess 23 in the auxiliary valve 11, which annular portor recess 23 communicates with the opposite end of the auxiliary valve11 by means of the longitudinal port or passage 22 in the auxiliaryvalve 11; thus the pres sure entering the port 26 in the cylinder 2 isled to the opposite end of the auxiliary valve 11 and acts against theleft end or head. of the said auxiliary valve 11 as will be clearlyapparent from Fig. 1. In order to insure a proper effective stroke ofthe cylinder 2 it is essential that the auxiliary valve 11 be maintainedin the position illustrated in Fig. 1 until the end of the effectivestroke. Should the auxiliary valve 11 move into position illustrated inFig. 2 before the piston 3v has completed its efiective stroke, saidpiston 3 would be quickly returned and a short stroke of the pistonwould result. In order therefore to prevent this short stroking and toabsolutely maintain the aux iliary valve 11 in position shown in Fig. 1the ports 27 leading from the cylinder 2 are larger than the ports 26 asis clearly apparent from an inspection of Fig. 1; come,

quently a greater pressure is exerted against the right end or head ofthe auxiliary valve 11 by reason of the enlarged size of the port 27than is exerted against the left end or head of the auxiliary valve 11.Further, more it will be observed that as the. passage of the fluidthrough port 26 is considerably longer than the passage of the fluidthrough port 27 it will be understood that the pressure acts morequickly and with greater effect upon the right end of the auxiliaryvalve ,11 than upon the left end thereof; consequently during the travelof the piston from the left end of the cylinder 2 to the right end itgets a proper and constant pressure for the reason that the auxiliaryvalve 11 is maintained in the position illustrated in Fig. 1 until thepiston 3 completes lts effective stroke. .However as soon as the pistonreaches the position shown in Fig. 2

which is the end of its effective stroke and passes the port 26 pressurein the cylinder 2 on the pressure side of the piston 3 enters thesmallerport 26 and is led to the left end or head of the auxiliary .valve 11throughv side the auxiliary valve 11 moves into position shown in Fig.2. As this "movement of the auxiliary valve 11, as shown in Fig. 2,carries the annular port 20 on the right hand portion of the auxiliaryvalve, 11 into communication with the ports 17 and 18 in the main valve9, which port 18 is in communication with the fluid, pressure by meansof the port 32 illustrated in dotted lines in Fig. 2, said pressure iscommunicated to the longitudinal ports 13 in the mainvalve 9 shown indotted lines in Fig. 2 which causes the said pressure to be exertedagainst the left end or head of the main valve 9, thus moving the mainvalve 9 into position illustrated in Fig. 3. o

The operation of this invention, it is thought, is made clearly apparentfrom the foregoing description, as it will be seen that with admissionof steam or other pressure supply through the port 5 the ports being inthe position indicated in Fig. 1 such steam or pressure supply will bedelivered through the intermediate ports and passages to the piston 3driving it toward the opposite end of its cylinder, thus imparting tosaid piston its initial efi'ective stroke. In the interim or as thepiston passes the port 26 the pressure will be delivered through saidport and its connections into and through the upper passage 22 of thepiston-valve 11, which pressure will be received upon the inner surfaceof the opposite head of the outer pistonvalve 9 and react to move thepiston-valve 11 in the opposite direction or to the position indicatedin Fig. 2. With this movement of parts the left hand port 15 of thepiston-valve 9 will be put into communication with the correspondingpassages 13 when the pressure will be delivered there through andagainst the initial or left hand head of said piston-valve and byreaction move the valve into the position indicated in Fig. 3, as it isthought will be readily appreciated. It will be also understood, and itis believed to be clearly apparent, that with this movement of thepiston-valves the steam or pressure will be shunted or controlled sothat the exhaust and receiving ends of the piston-cylinder will beautomatically interchanged and the position or movement of the pistonthus be likewise or automatically controlled; and from which theadvantages and benefits of our invention as above given will be fullyappreciated.

The operation of the valve in exhausting pressure from the cylinder 2 isas follows: As the piston 3 moves from the left end of the cylinder 2toward the right end the contents of the cylinder 2 on this stroke isexhausted through the exhaust port 29 into the chamber 31, into the port33 and into the annular port in the main valve 9 which communicatestherewith and thence into the passage 8 in the valve casing and outthrough the exhaust passage 6 as will be clearly apparent from Fig. 1,it being of course understoodthat a portion of the exhaust from thecylinder 2 enters the ports v 26 and 27 leading from the cylmder 2 inorder to hold the auxiliary valve 11 in position shown in Fig. 1 as hasbeen previously described. When, however, the auxiliary valve 11 movesfrom the position shown in Fig. 1 into position shown in Fig. 2 saidauxiliary valve 11 exhausts directly into the cylinder 2 through theport 27 entering said cylinder as will be apparent from an mspection ofthe drawings. When, however, the auxiliary valve 11 has been moved intoposition shown in Fig. 2 the annular port 19 on the right portion of theauxiliary valve 11 moves into communication with the port 15 of the mainvalve 9 which causes the exhaust from the main valve 9 to pass throughthe longitudinal ports 13 therein shown in dotted lines in Fig. 2 andout through the port or passage 33 into the exhaust port or passage 8 inthe valve casing.

The exhaust of the auxiliary valve 11 directly into the cylinder 2 is amaterial feature of this construction. It will be noted that thethreaded plugs 12 in the ends of the main valve 9 are provided with acentral boss or projection against which the auxiliary valve 11 impingesat the end of each stroke of said auxiliary valve 11, thus acting as astop for the movement of the auxiliary valve 11 and allowing ample spaceto remain at all times between the end or head of the auxiliary valve 11and the inner end of the main valve 9 so as to provide for a properoperation of the valve. It will also be noted that the said threadedplugs 12 are so con structed as to extend some distance beyond the endsof the main valve 9 so as always to maintain a space between the ends orheads of the main valve 9 and the threaded plugs 12 of the valve casing.

Having thus fully described the invention it is of course apparent thatcertain changes can be made in the arrangement and construction of theparts and we consider ourselves clearly entitled to all such changes andmodifications as fall within the scope of the appended claims.

What we claim as new and desire to secure by Letters Patent of theUnited States, is

1. A device of the character described comrisin a c linder and iston two')OllS communicating with the said cylinder at each end thereof to actas supply and exhaust ports, a plurality of ports independent from thesupply and exhaust ports communicating with the cylinder, a valve casingassociated with said cylinder, a cylindrical main valve within saidvalve casing, a cylindrical auxiliary valve within said cylindrical mainvalve, said cylindrical main valve and cylindrical auxiliary valve beingprovided with ports and passages communicating with the supply andexhaust ports of the. cylinder and effecting communication between saidsupply and exhaust ports of the cylinder and supply and exhaust openingsin the valve casing, ports in said main and auxiliary valvescommunicating with ports in said cylinder other than the supply andexhaust ports in order to cause the exhaust from the cylinder toact'upon the auxiliary valve simultaneously at both ends thereof and toprovide a greater pressure on one end of the auxiliary valve than on theother to hold the said auxiliary valve against movement, one of saidlast mentioned ports being arranged to take pressure from the cylinderto exert the same on one end of the auxiliary valve to move the same tolead pressure to one end of the main valve to move said main valve toeffect communication between the intake and exhaust openings in thevalve casing with the intake and exhaust ports of the cylinder,substantially as described and for the purposes set forth.

2. A device of the character described comprising a cylinder and apiston, suitable supply and exhaustports in said cylinder, additionalports in said cylinder, a valve casing associated with said cylinder, amain slidable valve in said valve casing, an auxil iary slidable valvearranged in said main valve and slidable therein, said valve casingbeing provided with suitable supply and ex haust openings to lead thepressure supply to the said valve casing and to conduct the exhausttherefrom, said main valve being provided with annular ports to registerwith the supply and exhaust ports in the valve casing and to registerwith the supply and exhaust ports leading to the said cylinder, saidmain valve being provided with ports arranged to register with the portsin said cylinder other than the main supply and exhaust ports to cause aportion of the ex haust from said cylinder to pass into the main valveand to act upon the said auxiliary valve therein, means in saidauxiliary valve to allow the exhaust pressure from the cylinder to acton both ends of the said auxiliary valve to hold the said auxiliaryvalve against movement during the efiective stroke of the said piston,one of said last mentioned ports in the said main valve be-. ingarranged to receive pressure from the said cylinder to move the saidauxiliary valve, said auxiliary valve being provided with ports adaptedto register with ports in the said main valve to cause the pressure fromthe cylinder to act upon the said main valve to move the same at thecompletion of each effective stroke of the said piston, substantially asdescribed and for the purposes set forth.

3. A device 'of the character described comprising a cylinder and apiston, said cylinder being provided with suitable supply and exhaustports and also provided with a plurality of additional ports, a mainslidable valve associated with said cylinder, an auxiliary valvearranged within said main valve and slidable therein, means for leadingthe supply pressure to the said main valve and for exhausting therefrom,said main valve being provided with ports to "me-mar lead thep'ressureand exhaust to and from the said cylinder, said main valve beingprovided with ports to register with the said additional ports in thesaid cylinder to lead a portion of the exhaust therefrom to the saidauxiliary valve with the said main valve, said auxiliary valve beingprovided with means for causing the exhaust pressure so led thereto toact on both ends of the said auxiliary valve to hold the said auxiliaryvalve against movement during the effective stroke, one of saidadditional ports in said cylinder being arranged to take pressure fromthe cylinder at the end of the effective stroke of the piston to leadpressuretherew from to one end of the said auxiliary valve to move thesame within the said main valve, said auxiliary valve being providedwith ports registering with ports in the said main valve to have acommunication be-- said cylinder, an auxiliary valve arrangedwithin saidmain valve and slidable therein, means for leading pressure and exhaustto and from said main valve, means for leading pressure an'diexhaust toand from said cylinder to said main valve, means for leading exhaustfrom said cylinder to said auxiliary valve to act at both ends thereofunequally in order to hold said auxiliary valve against movement duringthe effective stroke of the said piston, said means also acting to causea communication between the supply pressurei'n said cylinder to one endof the said auxiliary valve when the said piston has reached the end ofits effective "stroke in order to move said auxiliary valve, saidauxiliary valve and said main valve being provided with means to leadsupply pressure to one end of said main valve to move said main valve,substantially as described and for the purposes set forth.

A device of the character described comprising a cylinder and piston, amain valve associated therewith, an auxiliary valve associated with saidmain valve, said device being provided with means for leading pressureto and exhausting from the said cylinderto actuate the said piston andprovided with means for leading a portion of the exhaust from saidcylinder to both ends of said auxiliary valvein such manner thatpressure of the exhau'stacts unequally upon the ends of said auxiliaryvalve to hold the said auxiliary valve against movement dursaid meansalso acting to cause a communi cation between the supply pressure in thecylinder and one end of the said auxiliary valve to move the saidauxiliary valve, said auxiliary valve and said main valve being providedwith means for leading the supply pressure to one end of the said mainvalve to move the same when the said piston has reached the end of itseJTective stroke, substantially as described.

6. A device of the character described comprising a cylinder and piston,a main valve associated therewith, an auxiliary valve associated withsaid main valve, means for leading a portion of the pressure from saidcylinder to the ends of said auxiliary valve in such manner that thepressure on the ends of said auxiliary valve is unequal so as to holdthe said auxiliary valve against movement during the effective stroke ofthe said piston, and means controlled by the movement of the saidauxiliary valve to effect communication between the supply pressure andone end of the said main valve to move the said main valve when the saidpiston has reached the end of its effective stroke.

7. A device of the character described comprising a cylinder and piston,a main valve assoclated W1th said cyllnder, an auxiliary valve arrangedwithin said main valve and slidable therein, said main valve beingprovided with ports to lead pressure to and exhaust from the saidcylinder, a threaded plug in each end of said main valve, each threadedplug being provided with a boss extending inwardly within the said mainvalve and in the path of movement of the said auxiliary valve, said bossbeing so arranged to limit the movement of the said auxiliary valvewithin the said main valve in such manner as to providea chamber betweenthe ends of the said auxiliary vlave and the inner surface of the saidthreaded plugs when the said auxiliary valve has reached the limit ofits movement, a casing for the said main valve, saidplugs extendingbeyond the ends of the said main valve to impinge against the saidcasing and to limit the movement of the said main valve, substantiallyas described and for the purposes set forth.

In testimony whereof, we aifix our signatures, in presence of twoWitnesses.

LOUIS SWENINGS ON. WM. H. WOODWARD. Witnesses:

R. G. KRIDLER, G. M. THOMAS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. 0.

